United States. Danfoss announced that it currently has more than 15 million TR6 thermostatic expansion valves (TXV) in operation nationwide.
The journey to 15 million TR6 valves began in 2003, when the SEER rating of residential air conditioning systems in the United States was SEER 10. This meant that most systems used a fixed hole dosing device and only high-efficiency systems used active measuring devices such as TXVs. After substantial research and customer input, Danfoss began designing a TXV that would meet the market's needs for high efficiency: TR6.
The TR6 was designed specifically for the U.S. residential air conditioning market and with plans to be manufactured according to Danfoss' strict quality standards: a laser-welded electric head creates a longer power element life than plasma welding, while subjecting it to less stress. The patented design of the internal check valve eliminates pressure drop; and accurate and non-adjustable factory overheating settings ensure that the product works properly out of the box.
Throughout its life, the TR6 has evolved to meet the needs of the market. In 2015, SEER's minimum requirements became regions, with stricter requirements in the southern and western regions of the country; However, the TR6 exceeds the requirements in general. Danfoss also expanded its offering to better meet the needs of contractors using TR6 valves by developing TR6 Universal replacement kits. The kits are available for R-22 or R-410A and include multiple valves and holes, offering contractors and technicians an all-in-one solution for TXV air conditioning replacement.
The TR6 has been very successful. Starting life as a solution only for the high-efficiency residential air conditioning market, it is now a standard piece of equipment.
